Requirements of the Switchgear Room
 CAUTION |
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hazard of incorrect dimensions
Adhere to the specified spacing dimensions around the
switchboard, refer to Table 13.
Failure to follow these instructions can result in injury or equipment damage.
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Prior to the installation of switchgear cubicles, refer to Civil Engineering Guide (BQT8706400) and make sure that the switchgear room complies with the below requirements:
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Observe the minimum distance between the switchgear and the wall of the room.
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The load-bearing capacity of the fastening areas must correspond to the weight of the switchgear (perform a stress analysis of the building).
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Check base frame (if used) for dimensions and positional tolerances.
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Check position of floor openings for MV and LV cables.
Table 13 Pressure Relief Exhausts and Civil Engineering Utility Space
|
Pressure relief |
|
|---|---|
|
Switchboard external exhaust |
Switchboard internal exhaust |
|
Tunnel |
Tunnel & absorber |
|
|
|
|
|
|
|
Rated voltage (kV) |
Basic structure panel dimension (mm) |
Pressure relief |
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|---|---|---|---|---|---|---|---|---|---|---|---|
|
Outside the building tunnel |
Inside the building tunnel and absorber |
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|
Ur |
H |
LV |
H1(2) |
T(3) |
H2 |
H3(4) |
H1(2) |
T(3) |
A |
H2 |
H3 |
|
Up to 12/17.5 |
2240 |
580 |
2710 |
470 |
3000 |
200 |
2710 |
470 |
260 |
3400 |
680 |
|
24 |
2400 |
630 |
2952 |
552 |
3150 |
200 |
2850 |
450 |
220 |
3500 |
650 |
|
(1) R - Distance to rear wall, 200 mm (AFL) and minimum 800 mm (AFLR). (2) With standard LV cabinet 630 mm. Increased height of LV cabinet is available, without impact on the ceiling height. (3) Height of the tunnel is inclusive of flange (40 mm for 24 kV and 12/17.5 kV). (4) Minimum 200 mm. |
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